evolution readiness - lego tree of life • clip birdsclip birds ... inheritance and life...
TRANSCRIPT
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Evolution Readiness
Linda Lacy – North Kansas City Schools
Carolyn Staudt - Concord Consortium
Laura O’Dwyer – Boston College
http://www.concord.org/projects/evolution-readiness
This material is based upon work supported by the National Science Foundation under Grant No. DRL-822213. Any opinions, findings, conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.
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The Concord Consortium
• Nonprofit research and development organization • Nonprofit research and development organization
• Dedicated to transforming education through technology• Dedicated to transforming education through technology
• Pioneers of learning innovations for STEM• Pioneers of learning innovations for STEM
• Dedicated to Open Source software• Dedicated to Open Source software
• Primarily funded by NSF since starting in 1994• Primarily funded by NSF since starting in 1994
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Introduction
• First step of a planned learning progression• First step of a planned learning progression1. Natural selection as an explanatory model for adaptation1. Natural selection as an explanatory model for adaptation2. Genetics as an explanatory model for inheritance2. Genetics as an explanatory model for inheritance3. Molecular biology as an explanatory model for genetics3. Molecular biology as an explanatory model for genetics
• What • What is is evolution “readiness,” anyway?evolution “readiness,” anyway?, y y, y y
• What role can computer models play?• What role can computer models play?
• What professional development is required?• What professional development is required?
Does learning early steps at one grade level facilitate learningDoes learning early steps at one grade level facilitate learning•• Does learning early steps at one grade level facilitate learning Does learning early steps at one grade level facilitate learning later ones in a higher grade?later ones in a higher grade?
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Description of the Projectp j
T t diT t di• Target audience:• Target audience:Fourth grade classes in MA, MO, and TXFourth grade classes in MA, MO, and TX
• Materials developed:• Materials developed: Materials developed: Materials developed:Interactive computer and classroom activitiesInteractive computer and classroom activitiesThree assessment instrumentsThree assessment instruments
• Professional Development:• Professional Development:FaceFace--toto--face workshopsface workshopsO liO liOnline courseOnline course
• Research and Assessment:• Research and Assessment:Comparison to baseline dataComparison to baseline dataComparison to baseline dataComparison to baseline dataBoston CollegeBoston College
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Hands-on Activities
Lif E h b k• Life on Earth book
• Fast plants and lettuce
• Timeline
• Lego Tree of Life
• Clip Birds Clip Birds
• Food WebCreativeCommons darwinsbulldog's photostream Flickr com
• Science Classroom Environment Survey
CreativeCommons darwinsbulldog s photostream Flickr.com
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The Virtual Greenhouse
AdaptationAdaptationAdaptationAdaptation• Three kinds of plants, five flowerboxes with differing amounts of light• Three kinds of plants, five flowerboxes with differing amounts of light• Kids experiment to discover which plants live in which flowerbox• Kids experiment to discover which plants live in which flowerbox
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The Virtual Field
Inheritance and life cycleInheritance and life cycle: all plants die every winter but healthy plants leave seeds: all plants die every winter but healthy plants leave seedsInheritance and life cycleInheritance and life cycle: all plants die every winter but healthy plants leave seeds: all plants die every winter but healthy plants leave seeds• • Field with linear light level gradientField with linear light level gradient• • Offspring look exactly like parent plantsOffspring look exactly like parent plants
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Plants with Variation
VariationVariation: some offspring differ from parents: over many generations small: some offspring differ from parents: over many generations smallVariationVariation: some offspring differ from parents: over many generations small : some offspring differ from parents: over many generations small variations build upvariations build up
• • A single variety of plant evolves into nine othersA single variety of plant evolves into nine others•• The different varieties are adapted to different regions of the field;The different varieties are adapted to different regions of the field; The different varieties are adapted to different regions of the field;The different varieties are adapted to different regions of the field;
eventually they can grow everywhereeventually they can grow everywhere
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Evolution!
When the environment changes the population of plants may be ableWhen the environment changes the population of plants may be ableWhen the environment changes the population of plants may be ableWhen the environment changes the population of plants may be ableto adapt (or not…)to adapt (or not…)• • Kids control the growth of mountains to change the environment on Kids control the growth of mountains to change the environment on both sides of the mountain rangeboth sides of the mountain rangeboth sides of the mountain rangeboth sides of the mountain range
•• If the environment changes too abruptly the plants all dieIf the environment changes too abruptly the plants all die
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Finally, a transfer task…y,
Environment differs in amount of water not lightEnvironment differs in amount of water not lightEnvironment differs in amount of water, not lightEnvironment differs in amount of water, not lightPlants all look the same but have different rootsPlants all look the same but have different roots
• • Differences between plants are invisible without special toolsDifferences between plants are invisible without special tools
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The Virtual Ecosystem y
Competition for resources (timed)Competition for resources (timed)Competition for resources (timed)Competition for resources (timed)• Single rabbit eating plant population• Single rabbit eating plant population• • Population of rabbits join your rabbit and compete for the plantsPopulation of rabbits join your rabbit and compete for the plants
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Variations and Adaptationsp
Plants and animals adapat to survive best in certain environmentsPlants and animals adapat to survive best in certain environmentsPlants and animals adapat to survive best in certain environmentsPlants and animals adapat to survive best in certain environments•• Different types of grasses grow best with a certain levels of waterDifferent types of grasses grow best with a certain levels of water• • Kids observe which type of grasses the different types of rabbits eatKids observe which type of grasses the different types of rabbits eat
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Natural Selection
Environment changes so plants and animals adapt in order to surviveEnvironment changes so plants and animals adapt in order to surviveEnvironment changes so plants and animals adapt in order to surviveEnvironment changes so plants and animals adapt in order to survive•• Kids build (and later remove) a damKids build (and later remove) a dam•• Observe how the population of grasses and rabbits changeObserve how the population of grasses and rabbits change
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Predator and Preyy
Introduction of a predator to the rabbitIntroduction of a predator to the rabbitIntroduction of a predator to the rabbitIntroduction of a predator to the rabbit•• Introduction of food chains (and food webs)Introduction of food chains (and food webs)•• Kids watch as the environment changes (the snow melts)Kids watch as the environment changes (the snow melts)
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Nature of Science
Experiment with EcosystemsExperiment with EcosystemsExperiment with EcosystemsExperiment with Ecosystems•• Experiment with the ecosystemExperiment with the ecosystem• • Kids create and test their hypothesis around the environmentKids create and test their hypothesis around the environment
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Implementation:N th K CitNorth Kansas City
Linda Lacy – Director of Research, Evaulation and AccountabilityAccountability
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Implementation:N th K CitNorth Kansas City
• Philosophical Concerns Philosophical Concerns- Consent/Assent- Teacher Support
• Integration of ER Curriculum
• Assessment
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Implementation:N th K CitNorth Kansas City
• Staff: Admin Teacher Tech Support• Staff: Admin, Teacher, Tech Support- Commitment- Staffing Changes
• Training- Face-to-Face- Virtual
• Limited Resources: Limited Resources:- Time- Space
Technolog- Technology
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Implementation Resultsp
• Laura O’Dwyer
• Shelagh Peoples
K h i Shi ld• Katherine Shields
• Caroline Wang
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Overview
• Big Ideas and Learning Goals
R h D i• Research Design
• Concept Inventory for Evolution Readiness
• Nature of Science Questionnaire
• Science Classroom Environment Survey
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Big Ideasg
• Big Idea 1: Basic Needs of Organisms Big Idea 1: Basic Needs of Organisms
• Big Idea 2: Life Cycle - Birth and Death Cycle
• Big Idea 3: Organisms and Their Environmentg g
• Big Idea 4: Classification of Organisms
• Big Idea 5: Inter-specific Differences
• Big Idea 6: Interactions Between Species
• Big Idea 7: Intra-specific Differences
• Big Idea 8: Adaptation/Evolution
• Big Idea 9: Heritability of Traits
• Big Idea 10: Reproduction
• Big Idea 11: Descent with Modification
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Guiding Research Questionsg
1. Do students come to understand the complex web of modelsand data, observations and experiments that underpin and validate the theory of evolution?validate the theory of evolution?
2. Do students develop a better understanding of the nature of i ? D k l d b t th t f i lscience? Does knowledge about the nature of science play a
role in students’ success in understanding and applying the concepts of evolution?
3. Does the Science Classroom Environment change as a result of program implementation?g
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Research Design:C h t D iCohort Design
• Year 1• Year 1Developed and piloted instruments - Spring 2009Collected baseline data from the students of participatingt h i th t diti l i l S i 2009teachers using the traditional curriculum - Spring 2009
• Year 2 Project implementation began in September 2009Collected data in Randolph, MA in Oct/Nov 2009 Collected data in TX, MO in February – April 2010y p
• Year 3Collecting data this year from classes taught by the sameCollecting data this year from classes taught by the same Teachers using our treatment
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Data Sources
Student DataContent assessment data:- Content assessment data:• Concept Inventory for Evolution Readiness (CIER)
- Survey instrument data:N f S i (NOS)•Nature of Science (NOS)
• Science Classroom Environment Scale (SCES)
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Concept Inventory for E l ti R di (CIER)Evolution Readiness (CIER)
• Items developed after we had finalized the learning progression and the curriculum/model goals.
• Pilot tested in North Kansas City, MO in spring 2009
• Developed CIER to be administered in two sessions-61 sub-prompts, MC, SA, OR questions, scored 0-1, 0-2, or 0-3
• Data Collection (spring 2009)-Year 1 – 132 students in three statesYear 2 186 students in three states-Year 2 – 186 students in three states
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CIER Year 1R ltResults
Reliability: α=.88Overall Mean = 530.87S D = 67 78S.D. = 67.78
MA Mean = 547.60 (51.86)MO Mean 548 15 (73 13)MO Mean = 548.15 (73.13)TX Mean = 501.98 (62.68)
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CIER Year 2R ltResults
Reliability: α=.90Overall Mean = 555.71S.D. = 78.97
MA Mean = 552.95 (64.92)MO Mean = 573 04 (86 87)MO Mean = 573.04 (86.87)TX Mean = 536.65 (72.68)
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CIER - Difficult Concepts
Most difficult concepts for students to understand:
- Selection pressure could lead to a change in the characteristicsSelection pressure could lead to a change in the characteristics of a population (Big Idea 8, Learning Goal 5)
- Different species could arise from one species if different groups- Different species could arise from one species if different groupshad different selection pressures (Big Idea 11, Learning Goal 2)
S i d t t h i th i i t- Species adapt to changes in their environment (Big Idea 8, Learning Goal 3)
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CIER: Easy Conceptsy
Easier concepts for students to understand:Easier concepts for students to understand:
- Particular physical traits help an organism to survive in a given environment (Big Idea 8 Learning Goal 7)environment (Big Idea 8, Learning Goal 7)
- Individuals of the same species may differ (Bi Id 7 L i G l 1)(Big Idea 7, Learning Goal 1)
- Plants and animals need air and water; plants also need lightand nutrients; animals also need food and shelter (Big Idea 1, Learning Goal 1)
- An organism thrives in specific environments that match its specific needs (Big Idea 3, Learning Goal 1)
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CIER Year 1 - Year 2Comparisons
Overall Results
Year 1 Mean =530.87Year 1 Mean 530.87
Year 2 Mean =555.71
Significant difference (p<.005)
Effect size d 35 s dEffect size d = .35 s.d.
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CIER Year 1 - Year 2C iComparisons
Results by Statey
MA: NS, d=.09 s.d.
MO: p<.1, d=.31 s.d.
TX: p< 01 d= 52 s dTX: p<.01, d=.52 s.d.
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CIER State Comparisons
There are three statistically significant differences:
In Year 1 MA and MO means are higher than the TX mean.
In Year 2 the MO mean is higher than the TX mean.g
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Nature of Science (NOS)
• Certainty: Scientific knowledge is• Certainty: Scientific knowledge is durable but subject to change.
I i I i i & i i• Inventive: Imagination & creativity are needed in science.
• Socially & Culturally Embedded:Science is socio-culturally embedded
• Empirical: Science is based on observations of the natural world.
• Theory-laden: Science is guided by theory & inference.
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NOS Rasch Variable Maps:Y 1 Y 2Year 1 vs. Year 2
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Sub-Scale Comparison: Year 1 t Y 2 M * (Std D )to Year 2 Mean* (Std. Dev.)
*All differences are Non-Significant.** p < 0.052
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NOS: Across State ComparisonMean Total Rasch Score (Std Dev )Mean Total Rasch Score (Std. Dev.)
•All differences are Non-Significant.
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NOS: Across State ComparisonMean Total Rasch Score (Std Dev )Mean Total Rasch Score (Std. Dev.)
* All differences are Non-are Non-Significant.
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Science ClassroomE i t l S l (SCES)Environmental Scale (SCES)
Based on the Reformed Teaching Observation Protocol (RTOP)):
• CK: Content Knowledge
• CC: Classroom Culture
• LDI: Lesson Design &Implementationg- Pedagogy of Inquiry- Community of Learners- Pedagogical TensionPedagogical Tension
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SCES SubscalesR l ti hiRelationships
ContentKnowledgeKnowledge
(CK)Pedagogical
Tension
SRO
OM
Community ofLeaders
MED
CLA
SS Lesson Designand
Implementation(LDI)
Classroom C lt
Pedagogy of InquiryRE
FORM
Culture(CC)
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SCES Item Map
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SCES Overall Score
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SCES Two-Way ANOVAy
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SCES Subscale Scores
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Big Picture: How are these t t l t d? (Y 2)constructs related? (Year 2)
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Next Steps
• Spring implementation in TX and MO
• Scoring after combining all tests Scoring after combining all tests
• Proposals for ongoing funding submitted
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Evolution Readiness
Linda Lacy – North Kansas City Schools
Carolyn Staudt - Concord Consortium
Laura O’Dwyer – Boston College
http://www.concord.org/projects/evolution-readiness
This material is based upon work supported by the National Science Foundation under Grant No. DRL-822213. Any opinions, findings, conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.